KrystaP99'

BibTeX

@article{DBLP:journals/jsc/KrystaP99,
  author    = {Piotr Krysta and
               Leszek Pacholski},
  title     = {The STO problem is NP-complete},
  journal   = {J. Symb. Comput.},
  volume    = {27},
  number    = {2},
  year      = {1999},
  pages     = {207-219},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}